WOW! Just read this post and went out and checked ours, as we have the same set-up. No problems, no cracks, under mag check, but ours only has a single set of holes, not the 2 as the OP has. Lubed with chain lube and plugged them back in. Depending on roads, the toad does move around at times. This is really a wake-up call. The last thing anyone wants is to cause injury to anyone else if the toad comes loose, even if you have a sup. brake system. 50/50 of the drivers do not pay attention more than 10 feet in front of their bumper.